I apologize you're having this experience with adding in your contacts! How are you adding them into your account? Are you typing in one contact at a time, typing in/pasting multiple contacts, or uploading a file of contacts? Do you receive any error messages? Is your page timing out? Also, have you tried working in a different browser or a private/incognito window? If you have not yet tested your browser I would suggest doing so as the next step of troubleshooting.